After paying $24 admission for adults, $18 for seniors and students, and $15 for kids 7 to 17, visitors can shop till they drop.

About 8,000 unidentified body parts are now stored out of sight in a “remains repository” at the museum’s underground home.

“Here is essentially our tomb of the unknown. To sell baubles I find quite shocking and repugnant,” said Horning, who also objects to the museum cafe.

“I think it’s a money-making venture to support inflated salaries, and they’re willing to do it over my son’s dead body.”

John Feal, a Ground Zero demolition supervisor who runs the FealGood Foundation for ailing 9/11 responders, said he understands the need to raise money for costs, including six-figure salaries for execs like CEO Joe Daniels, who takes in $378,000.

In a twist, a plaque says the store was “made possible through the generosity of Paul Napoli and Marc Bern,” partners in a law firm that reaped $200 million in taxpayer-funded fees and expenses after suing the city for nearly 10,000 Ground Zero workers.